JP3934865B2 - Call processing method and handoff processing method in an asynchronous mobile communication system - Google Patents

Description

[0001]
[Technical field to which the invention belongs]
The present invention relates to an invention in a case where call processing and handoff processing are performed in an asynchronous mobile communication system (for example, in an IMT-2000 system), and in particular, a connected core network is a synchronous core network. The present invention relates to a call processing method and a handoff processing method in an asynchronous mobile communication system.
[0002]
[Prior art]
In the case of a conventional synchronous mobile communication system, a synchronous terminal and a synchronous wireless network (also referred to as a “CDMA-2000 wireless network”) of a synchronous communication method are connected and connected to the ANSI-41 network through a core network (CN). .
[0003]
In the case of a conventional asynchronous mobile communication system, an asynchronous terminal and an asynchronous wireless network UTRAN (UMTS Terrestrial Radio Access Network) are connected to each other, and the GSM-MAP (Global System for Mobile Communication- Mobile Application Part) Connected to the network.
[0004]
FIG. 1A and FIG. 1B attached are diagrams showing a core network interlocking structure of the conventional mobile communication system as described above.
[0005]
FIG. 1A is a diagram showing a core network interlocking structure of a synchronous mobile communication system, where reference numeral 11 indicates a synchronous terminal, reference numeral 12 wirelessly interfaces with the synchronous terminal 11 and includes a base station and a control station Reference numeral 13 denotes a synchronous radio network (CDMA-2000 radio network), and reference numeral 13 is a synchronous core network connected to the synchronous radio network 12, which includes a synchronous mobile communication switch (MSC).
[0006]
In the core network interlocking structure of such a conventional synchronous mobile communication system, the synchronization terminal 11 can be connected only to the synchronous radio network 12, as is well known, and the synchronous radio network 12 is only connected to the synchronous core network 13. Can be linked.
[0007]
FIG. 1B is a diagram showing a core network interlocking structure of an asynchronous mobile communication system. Reference numeral 21 indicates an asynchronous terminal, 22 indicates an UTRAN which is an asynchronous radio network including a base station and a control station, and 23 indicates the UTRAN 22 An asynchronous core network including an asynchronous mobile communication switch (MSC) connected to the network is shown.
[0008]
With such a core network interlocking structure of the conventional asynchronous mobile communication system, the asynchronous terminal 21 can be linked only with the UTRAN 22 which is an asynchronous wireless network, and the UTRAN 22 can be linked only with the asynchronous core network 23.
[0009]
FIG. 2A and FIG. 2B attached are diagrams showing the protocol structure of each part of the conventional synchronous / asynchronous mobile communication system as described above.
[0010]
Here, FIG. 2A is a diagram showing a protocol structure of each part of the synchronous mobile communication system. Reference numeral 30 indicates a synchronous terminal, reference numeral 40 indicates a synchronous radio network, and reference numeral 50 indicates the synchronous radio network. A synchronous core network connected to 40 is shown.
[0011]
The synchronization terminal 30 is divided into a hierarchy 3 (31), a hierarchy 2 (35), and a hierarchy 1 (36), and is provided with a protocol corresponding to each level. Synchronous call control (CC: Call Control) unit 32, synchronous mobility management (MM: Mobility Management) unit 33 for mobility management, and synchronous radio resource (RR: Radio Resource) for controlling radio resources Part 34 is provided.
[0012]
In particular, layer 3 (31) includes a synchronous radio resource (RR) sub-layer 34, a synchronous call control (CC) unit 32, and a mobility management (MM) unit 33. In the synchronization system, the synchronous radio resource sub-layer 34 is not clearly divided into separate sub-layers of the layer 3 (31).
[0013]
The call control unit 32 processes layer 3 call control signaling between the user equipment (UE) and the synchronous wireless network.
[0014]
The mobility management unit 33 processes the mobility management signaling of the layer 3 between the user apparatus (UE) and the synchronous radio network.
[0015]
Layers 3 to 1 (31, 35, 36) communicate with corresponding layers of the synchronous radio network 40, that is, layers 3 to 1 (41, 45, 46).
[0016]
The synchronous radio network 40 includes a hierarchy 3 (41), a hierarchy 2 (45), and a hierarchy 46. The synchronous radio network 40 includes protocols corresponding to the hierarchy 3 (41), the hierarchy 2 (45), and the hierarchy 1 (46), and corresponds to the same hierarchy as each hierarchy of the synchronization terminal 30.
[0017]
The layers 3 to 1 (41, 45, 46) of the synchronous radio network 40 communicate with the corresponding layers 31, 35, 36, 51, 55, 56 of the synchronization terminal 30 and the synchronization core network 50.
[0018]
The synchronous core network 50 is divided into a hierarchy 3 (51), a hierarchy 2 (55), and a hierarchy 1 (56), and is provided with a protocol corresponding to each level. Synchronous call control (CC) part 52 for management, synchronous mobility management (MM: Mobility Management) part 53 for mobility management, and synchronous radio resource (RR: Radio Resource for radio resource management) ) Part (54).
[0019]
With the above-described interlocking structure, the synchronization terminal 30 receives a synchronization channel message from the synchronous radio network 40 of the synchronous communication method via the synchronization channel (Synchronous Channel), and is associated with the core network connected via the synchronization channel message. Synchronous terminals such as information and synchronous wireless network information acquire information necessary for connection to the network.
[0020]
That is, when the synchronous terminal, the synchronous wireless network of the synchronous communication system, and the synchronous ANSI-41 network are linked, the synchronous terminal, after power is turned on, the system determination sub-state, pilot channel acquisition System (radio network and core network) information is obtained via the state (Pilot Channel Acquisition Sub-state), the synchronization channel acquisition state (Synchronous Channel Acquisition Sub-state), and the synchronization state (Timing Changing Sub-state).
[0021]
FIG. 2b shows a protocol structure of each part of the asynchronous mobile communication system. Reference numeral 60 indicates an asynchronous terminal, 70 indicates an asynchronous radio network (UTRAN), and 80 indicates an asynchronous core network.
[0022]
The asynchronous terminal 60 is divided into a hierarchy 3 (61), a hierarchy 2 (65), and a hierarchy 1 (66), and is provided with a protocol corresponding to each level. In particular, layer 3 (61) controls an asynchronous call control (CC) unit 62 for call management, an asynchronous mobility management (MM) unit 63 for mobility management, and radio resources. A radio resource control (RRC) unit is provided. In an asynchronous system, layer 3 (61) is classified into a NAS (Non-Access Stratum) unit including an asynchronous call control unit 62 and an asynchronous mobility management unit 63 and an AS (Access Stratum) unit including a radio resource control unit 64. The
[0023]
UTRAN 70 corresponds to each layer of asynchronous terminal 60, and corresponds to each layer of asynchronous core network 80, and corresponds to layer 3 (71), layer 2 (73), and layer 1 (74). The protocol is embodied. The layer 3 (71) of the asynchronous radio network 70 is different from the layer structure of the asynchronous terminal 60 in that the asynchronous CC unit and the asynchronous MM unit are not provided, and includes the asynchronous radio resource unit 72 and the other layer structures are the same. It is.
[0024]
The asynchronous core network 80 includes an asynchronous call control (CC) unit 82 for connecting to the asynchronous terminal 60, an asynchronous mobility management (MM) unit 83 for mobility management, and a radio resource control for controlling radio resources. Protocols corresponding to layer 3 (81) including the unit 84, layer 2 (85), and layer 1 (86) are provided.
[0025]
In the asynchronous mobile communication system configured as described above, the asynchronous terminal 60 receives a system information message (System Information Message) from the UTRAN 70 via the broadcast control channel (BCCH), and receives the core through this system information message. Asynchronous terminals such as network-related information and UTRAN information acquire information necessary for connection to the network.
[0026]
For IMT-2000 systems and next-generation mobile communication systems, because of international roaming, the GSM-MAP network that is used asynchronously with the core network and the ANSI-41 network that is used synchronously must all be linked. I must.
[0027]
Therefore, the IMT-2000 system can have the following four types of interlocking structures depending on the network deployment status.
[0028]
First, synchronous terminal-synchronous communication method wireless network-ANSI-41 network interlocking structure, second, synchronous terminal-synchronous communication method wireless network-GSM-MAP network interlocking structure, and thirdly, Asynchronous terminal-asynchronous communication system wireless network-ANSI-41 network interlocking structure, and fourth, asynchronous terminal-asynchronous communication system wireless network-GSM-MAP network interlocking structure.
[0029]
3A to 3D are diagrams illustrating a core network interlocking structure in a next-generation mobile communication system.
[0030]
First, FIG. 3A is a synchronous ANSI-41 core network interlocking structure diagram in a synchronous mobile communication system, where reference numeral 100 is a hybrid type synchronous terminal, 110 is a synchronous radio network, and 120 is a synchronous core. Each of the synchronous core networks 120 includes a synchronous mobile communication switch (MSC).
[0031]
FIG. 3B shows that when the core network connected in the synchronous mobile communication system is an asynchronous core network, reference numeral 100 denotes a hybrid type synchronous terminal, 110 denotes a synchronous wireless network, and 130 denotes a synchronous structure. Asynchronous core networks 130 are shown, and the asynchronous core network 130 includes an asynchronous mobile communication switch (MSC).
[0032]
Next, FIG. 3C is an asynchronous GSM-MAP core network linkage structure diagram in an asynchronous mobile communication system, where reference numeral 210 is an asynchronous terminal, 220 is an asynchronous radio network UTRAN, and 230 is the above-described As a core network connected to UTRAN220 which is an asynchronous radio network, an asynchronous mobile communication switch (MSC) is included.
[0033]
3D is a synchronous ANSI-41 core network interlocking structure diagram in an asynchronous mobile communication system. Reference numeral 210 is an asynchronous terminal, 220 is an UTRAN that is an asynchronous wireless network, and 240 is the asynchronous mobile network. A synchronous mobile communication switch (MSC) is included as a core network connected to the UTRAN 220, which is a wireless network.
[0034]
In order to enable adaptive operation in these four structures, the synchronous terminal and the asynchronous terminal are different from the synchronous terminal and the asynchronous terminal used in the conventional synchronous / asynchronous mobile communication system. Layer 3 includes all CC (Call Control) and MM (Mobility Management) protocol entities for GSM-MAP core network services, and all CC and MM protocol entities for ANSI-41 core network services.
[0035]
4A to 4D are protocol hierarchy diagrams of synchronous / asynchronous terminals in the next-generation mobile communication system.
[0036]
First, FIG. 4a is a protocol layer structure diagram of a hybrid type synchronous terminal that works with the ANSI-41 core network in a synchronous mobile communication system. Reference numeral 100 denotes a hybrid type synchronous terminal, and 110 denotes a hybrid type synchronous wireless network. 120 is an ANSI-41 core network which is a synchronous core network connected to the synchronous radio network 110.
[0037]
With such an interlocking structure, the hybrid type synchronous terminal 100 is divided into a hierarchy 3 (101), a hierarchy 2 (107), and a hierarchy 1 (108), and the hierarchy 3 (101) includes a synchronous CC 102, a synchronous MM 103, and an asynchronous CC 104. All of the asynchronous MMs 105 are provided, and the CC / MM protocol is selectively activated according to the core network type (a code that can identify the type of the core network).
[0038]
For example, since the currently connected network is the ANSI-41 core network 120, the protocol of the synchronous CC 102 and the synchronous MM 103 is activated to interface the message with the ANSI-41 core network 120.
[0039]
Further, layer 3 (101) includes a synchronous RR 106 that controls radio resources.
[0040]
Next, the synchronous radio network 110 is composed of layer 3 (111), layer 2 (115), and layer 1 (116), and corresponds to each layer of the hybrid type synchronous terminal 100 and each layer of the ANSI-41 core network 120. Activate the protocol to interface the message.
[0041]
The ANSI-41 core network 120 is divided into a hierarchy 3 (121), a hierarchy 2 (125), and a hierarchy 1 (126), and the hierarchy 3 (121) includes a synchronous CC 122, a synchronous MM 123, and a synchronous RR 124.
[0042]
On the other hand, when the core network connected to the synchronous mobile communication system is an asynchronous core network as shown in FIG. 3B, it has a protocol structure as shown in FIG. 4B.
[0043]
Here, reference numeral 100 is a hybrid type synchronous terminal, reference numeral 110 is a synchronous radio network, and reference numeral 130 is an asynchronous core network.
[0044]
In this interlocking structure, the hybrid type synchronous terminal 100 is divided into a hierarchy 3 (101), a hierarchy 2 (107), and a hierarchy 1 (108), and the hierarchy 3 (101) includes a synchronous CC 102, a synchronous MM 103, and an asynchronous CC 104. All of the asynchronous MMs 105 are provided, and the CC / MM protocol is selectively activated according to the core network type (a code that can identify the type of the core network).
[0045]
For example, since the currently connected network is the GSM-MAP core network 130, the asynchronous CC 104 and asynchronous MM 105 protocols are activated to interface messages with the GSM-MAP core network 130.
[0046]
Layer 3 (101) includes a synchronous RR 106 that controls radio resources.
[0047]
Next, the synchronous radio network 110 is composed of layer 3 (111), layer 2 (115), and layer 1 (116), and corresponds to each layer of the hybrid type synchronization terminal 100 and each layer of the GSM-MAP core network 130. Activate the protocol to interface messages.
[0048]
The GSM-MAP core network 130 is divided into layer 3 (131), layer 2 (135), and layer 1 (136). The layer 3 includes a NAS (Non-Access Stratum) unit and an AS (Access Stratum). ) Unit 131, the NAS unit includes an asynchronous CC132 and an asynchronous MM133, and the AS unit includes an asynchronous RRC134.
[0049]
FIG. 4C is a protocol hierarchy diagram of an asynchronous terminal that works with the ANSI-41 core network in the asynchronous mobile communication system. Here, reference numeral 210 is an asynchronous terminal, 220 is a UTRAN which is an asynchronous wireless network, and 230 is an ANSI-41 core network connected to the UTRAN 220 which is the asynchronous wireless network.
[0050]
Asynchronous terminal 210 in such a protocol structure is divided into layer 3 (211), layer 2 (217), layer 1 (218), and layer 1 includes all of synchronous CC 211, synchronous MM 212, asynchronous CC 213, and asynchronous MM 214. And selectively activate synchronous CC / MM or asynchronous CC / MM protocol.
[0051]
For example, since the currently connected network is the ANSI-41 core network 230, the protocol of the synchronous CC 211 and the synchronous MM 212 is activated to interface the message with the ANSI-41 core network 230.
[0052]
Further, layer 3 (211) includes an asynchronous RRC 216 that controls radio resources.
[0053]
Next, FIG. 4D shows a protocol layer structure diagram of an asynchronous terminal that works with a GSM-MAP core network in an asynchronous mobile communication system.
Here, reference numeral 210 is an asynchronous terminal, 220 is a UTRAN which is an asynchronous radio network, and 240 is a GSM-MAP core network connected to the UTRAN 220 which is the asynchronous radio network.
[0055]
With such a protocol structure, the asynchronous terminal 210 is divided into layer 3 (211), layer 2 (217), layer 1 (218), and layer 3 (21) includes synchronous CC 211, synchronous MM 212, asynchronous CC 213, asynchronous All MM214 is provided, and the protocol of synchronous CC / MM or asynchronous CC / MM is selectively activated.
[0056]
For example, since the currently connected network is the GSM-MAP core network 240, the asynchronous CC213 and asynchronous MM214 protocols are activated to interface messages with the GSM-MAP core network 240.
[0057]
Further, layer 3 (211) includes an asynchronous RRC 216 that controls radio resources. When an asynchronous terminal communicates with an asynchronous core network, the MM part and CC part of the wireless network are not directly involved.
[0058]
As described above, the IMT-2000 system is composed of four types of interlocking structures, and thus requires an interface standard corresponding to each interlocking structure. That is, in order to perform handoff and call processing in a synchronous / asynchronous mobile communication system, an interface communication protocol for each synchronous / asynchronous communication system is required.
[0059]
When performing call processing and handoff processing in a conventional synchronous mobile communication system, messages and parameters defined in the international standard synchronous communication protocol according to the call processing process and handoff processing procedure defined in the well-known international standard communication protocol. And so on. In other words, in the case of an air-interface between a synchronous terminal and a synchronous communication wireless network, messages and parameters defined in the TIA / EIA / IS-2000 international standard communication protocol are exchanged. In the case of an A-Interface that is exchanged between the synchronous wireless network and the ANSI-41 network, the message is processed according to the call processing and handoff processing defined in the 3G-IOS international standard communication protocol. And exchange parameters.
[0060]
In conclusion, in order to perform smooth call processing and handoff in the IMT-2000 system of the synchronous communication method, in the case of the international communication protocol defined in the synchronous communication method, that is, the air-interface (Air-Interface) The TIA / EIA / IS-2000 communication protocol should be used, and in the case of A-Interface, the 3G-IOS communication protocol should be used.
[0061]
In the asynchronous mobile communication system, an asynchronous communication system interface protocol is used for call processing and handoff processing.
[0062]
That is, between an asynchronous terminal and an asynchronous wireless network, it is called an air-interface, and a communication protocol called an asynchronous communication air-interface is used to connect the asynchronous wireless network and the core network. A GSM-MAP network is called an A-Interface and uses a communication protocol called RANAP (Radio Access Network Application Part).
[0063]
Asynchronous communication Air-Interface and RANAP communication protocol referred to above are the international IMT-2000 system Air-Interface and RANAP asynchronous communication methods, respectively. These are standard communication rules, and the Air-Interface and RANAP communication rules are international standard communication rules that are not considered at all for the synchronous communication method.
[0064]
When performing call processing and handoff processing in a conventional asynchronous mobile communication system using such an interface, the international standard asynchronous communication is performed according to the call processing and handoff processing defined in the well-known international standard asynchronous communication protocol. Exchange messages and parameters defined in the contract. In other words, in the case of an air interface between an asynchronous terminal and an asynchronous communication wireless network, it is defined in an international standard communication protocol called an asynchronous communication air interface (Air-Interface). In the case of an A-Interface between the asynchronous wireless network and the GSM-MAP network, the call processing process defined in the international standard communication protocol called RANAP and Messages and parameters are exchanged according to the handoff process.
[0065]
In conclusion, in order to perform smooth call processing and handoff in the IMT-2000 system of asynchronous communication method, in the case of the international communication protocol defined as asynchronous communication method, that is, Air-Interface. Should use the international standard communication protocol called Asynchronous Communication Air-Interface, and in the case of A-Interface, the communication protocol called RANAP should be used.
[0066]
However, when the IMT-2000 system is connected to an asynchronous terminal, an asynchronous communication wireless network, and an ANSI-41 network in conjunction with the core network, the international communication protocol of the known asynchronous communication It cannot be used as it is.
[0067]
In other words, the air-interface between the asynchronous terminal and the asynchronous communication wireless network is the asynchronous communication air interface (Air-Interface) used in the asynchronous communication method of the conventional IMT-2000 system. In the A-Interface between the asynchronous wireless network and the core network, 3G-IOS, an international communication system used in the synchronous communication method of the conventional IMT-2000 system, is used. Conventions should be used.
[0068]
However, the international communication protocol of the conventional asynchronous communication system is not considered at all for the air-interface (A-Interface) communication protocol of the synchronous communication system, as is well known. Therefore, there is a problem that when the asynchronous radio network of the asynchronous communication system is connected to the ANSI-41 network, which is a synchronous core network, as a core network, the synchronization is impossible.
[0069]
That is, since the international communication protocol of the asynchronous communication system is not considered at all for call processing and handoff processing of other communication systems, if a synchronous core network is connected as a core network, Are not possible, and call processing and handoff processing are impossible.
[0070]
[Problems to be solved by the invention]
The present invention has been proposed in order to solve the various problems that occur in the conventional synchronous / asynchronous mobile communication systems as described above, and an object of the present invention is to provide an asynchronous wireless network in an asynchronous mobile communication system. Even when the connected network is the ANSI-41 network, which is a synchronous core network, the asynchronous wireless network and asynchronous terminal can be linked to the ANSI-41 network, and the synchronous core network and call processing and handoff processing It is an object of the present invention to provide a call processing method and a handoff processing method in an asynchronous mobile communication system in which the smoothness is smooth.
[0071]
[Means for Solving the Problems]
To achieve the above object, the present invention provides an asynchronous terminal having a call processing unit (CC), a mobility management unit (MM) and a radio resource control unit (RRC), and an asynchronous radio network having a radio resource control unit. In a call processing method in an asynchronous mobile communication system linked to a synchronous core network, a first step of setting a call when an outgoing call message occurs, and a channel between the asynchronous terminal and the asynchronous wireless network A second step for setting radio resource allocation basic information, a fourth step for performing encryption setting, a fifth step for setting radio resources, and a sixth step for performing service configuration. And a seventh step of transmitting a call waiting message to the user.
[0072]
The present invention also comprises an asynchronous terminal having a call processing unit (CC), a mobility management unit (MM) and a radio resource control unit (RRC), and an asynchronous radio network having a radio resource control unit, In a call processing method when a call release in an asynchronous mobile communication system linked to a network occurs in the asynchronous terminal, a message requesting release of wired resources and wireless resources is transmitted from the asynchronous terminal to the asynchronous wireless network. 1 step, a second step of transmitting a call release request message from the asynchronous radio network to the synchronous core network, and after receiving a resource release command from the synchronous core network, a radio resource release message is sent from the asynchronous radio network to the synchronous core network. A third step of transmitting to the asynchronous terminal; a fourth step of releasing the radio dedicated resource at the asynchronous terminal; and a radio resource release completion for reporting that the radio dedicated resource release is completed. A fifth step of transmitting a message to the asynchronous radio network, a sixth step of transmitting a connection release message from the asynchronous radio network to the asynchronous terminal to inform that the layer 3 signaling and the radio shared resource should be released, A seventh step of transmitting from the asynchronous wireless network to the synchronous network a release completion message reporting that all radio resources and signaling between the asynchronous terminal and the asynchronous wireless network have been released. It is characterized by being.
[0073]
The present invention also comprises an asynchronous terminal having a call processing unit (CC), a mobility management unit (MM) and a radio resource control unit (RRC), and an asynchronous radio network having a radio resource control unit, In a call processing method when call release in an asynchronous mobile communication system linked to a network is started in the synchronous core network, a radio resource release message is sent to the asynchronous radio network after receiving a resource release command from the synchronous core network. A first step of transmitting from the asynchronous terminal to the asynchronous terminal; a second step of releasing the dedicated radio resource at the asynchronous terminal; and a radio resource release completion message reporting that the release of the dedicated radio resource is completed. And a fourth step of transmitting a connection release message from the asynchronous wireless network to the asynchronous terminal to inform that the layer 3 signaling and the wireless shared resource should be released. And a fifth step of transmitting from the asynchronous radio network to the synchronous core network a release completion message reporting that all radio resources and signaling between the asynchronous terminal and the asynchronous radio network have been released. It is characterized by being.
[0074]
The present invention also comprises an asynchronous terminal having a call processing unit (CC) and a radio resource control unit (RRC), a source asynchronous radio network having a radio resource control unit, and a synchronous core network and at least one or more In a handoff processing method in an asynchronous mobile communication system linked with a target asynchronous wireless network, a first step of determining handoff, a second step of selecting the target asynchronous wireless network to be handed off, and responding to a handoff request A third step of providing handoff related information to complete handoff preparation, a fourth step of completing a handoff by setting up a connection between the asynchronous terminal and the target asynchronous wireless network, and the asynchronous terminal, And a fifth step of releasing the connection with the source asynchronous wireless network.
[0075]
The present invention also includes a first step of determining handoff in a handoff processing method in an asynchronous mobile communication system that includes an asynchronous terminal and a source asynchronous wireless network and is linked to a synchronous core network and at least one target synchronous wireless network, A second step of selecting the target synchronous radio network to be performed, and a third step of completing handoff preparation by providing handoff related information in response to the handoff request;
A fourth step of setting a connection between the asynchronous terminal and the target synchronous wireless network and completing a handoff; and a fifth step of releasing the connection between the asynchronous terminal and the source asynchronous wireless network It is characterized by being.
[0076]
The present invention also includes a first step of determining a handoff in a handoff processing method in a synchronous mobile communication system that includes a synchronous terminal and a source synchronous wireless network and is linked to a synchronous core network and at least one target asynchronous wireless network; A second step of selecting the target asynchronous radio network to be performed, a third step of providing handoff related information and completing handoff preparation in response to a handoff request, and the synchronous terminal and the target asynchronous radio network It is characterized by comprising a fourth step of setting a connection in between and completing the handoff, and a fifth step of releasing the connection between the synchronous terminal and the source synchronous radio network.
[0077]
The present invention also includes a first step of determining handoff in a handoff processing method in an asynchronous mobile communication system that includes an asynchronous terminal, a source asynchronous wireless network, and is linked to a synchronous core network and at least one target analog wireless network; A second step of selecting the target analog radio network to be performed, a third step of providing handoff related information and completing handoff preparation in response to a handoff request, and the asynchronous terminal and the target analog radio network It is characterized by comprising a fourth step of setting a connection in between to complete the handoff, and a fifth step of releasing the connection between the asynchronous terminal and the source asynchronous wireless network.
[0078]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the present invention based on the above technical idea will be described in detail with reference to the accompanying drawings.
[0079]
FIG. 5 attached is an overall interlocking structure diagram when the core network in the asynchronous mobile communication system to which the present invention is applied is an ANSI-41 network.
[0080]
Here, reference numeral 300 denotes an asynchronous radio network provided in the asynchronous mobile communication system, and reference numeral 400 denotes a synchronous core network as a core network connected to the asynchronous radio network 300. Reference numeral 500 indicates an analog radio network that can be connected to the synchronous core network 400, and reference numeral 600 indicates a synchronous radio network that can be connected to the synchronous core network 400.
[0081]
In such an interlocking structure, an asynchronous mobile communication system is interlocked with a synchronous core network (ANSI-41 network) 400 as a core network for the asynchronous wireless network 300, and the synchronous core network 400 is connected to the analog wireless network 500. Alternatively, a structure in which the synchronous wireless network 600 is interlocked is shown.
[0082]
FIG. 6 is a diagram showing the relationship between the wired section interface and the wireless section interface when the core network in the asynchronous mobile communication system to which the present invention is applied is ANSI-41.
[0083]
Here, reference numeral 310 indicates an asynchronous terminal, and reference numerals 300 and 400 indicate a known asynchronous wireless network and a synchronous core network, respectively.
[0084]
The interface in such a linked structure is wired between the asynchronous terminal 310 and the asynchronous wireless network 300 which are wireless sections (Air-Interface) in accordance with the existing international communication protocol (asynchronous communication Air-Interface) of the asynchronous communication system. Between the asynchronous wireless network 300 and the synchronous core network 400 which are sections (A-Interface), the international communication protocol (3G-IOS) of the existing synchronous communication system is followed.
[0085]
As described above, new call processing and handoff processing procedures are required for interlocking structures with different communication methods. As is well known in the present invention, call processing and handoff are smoothly performed even with intersystem linkage structures with different communication methods. Provided are a call processing method and a handoff processing method that enable processing.
[0086]
Note that the call processing method and the handoff processing method of the present invention are performed by computer processing, and the operations on the flowchart described below indicate operations normally performed by a microcomputer.
[0087]
[Embodiment 1]
7A to 7C attached are flowcharts showing a call processing method in the asynchronous mobile communication system according to the present invention. Here, reference numeral 710 indicates an asynchronous terminal (MS), reference numeral 711 is a call processing unit (CC), 712 is a mobility management unit (MM), and 713 is a radio resource control unit (RRC). is there. As described above, the call processing unit (CC), the mobility management unit (MM), and the radio resource control unit (RRC) are provided in the asynchronous terminal (MS).
[0088]
Reference numeral 720 denotes an asynchronous radio network (UTRAN), and reference numeral 721 denotes a radio resource control unit (RRC) provided in a control station (asynchronous radio network) in the asynchronous radio network 720.
[0089]
Reference numeral 730 denotes an ANSI-41 network that is a synchronous core network, reference numeral 731 is a mobility management unit (MM), reference numeral 732 is a call processing unit (CC), and the mobility management unit The 731 and the call processing unit 732 are provided in a mobile communication switch (MSC) in the synchronous core network 730.
[0090]
Such an interlocking structure is a structure in which an asynchronous wireless network and a synchronous core network of an asynchronous mobile communication system are interlocked. The call processing method in this case is as follows.
[0091]
First, in step S1, CC (Call Control) belonging to NAS (Non Access Stratum) of asynchronous terminal (MS) is RRC (Radio) belonging to AS (Non Access Stratum) of asynchronous terminal. Primitive called “UE Side Initiated Connection Establishment Request” of DC-SAP (Dedicated Control Service Access Point) supported by AS for Radio Resource Control) Is used to transmit an “Origination” message. Call origination starts with this message.
[0092]
The RRC of the asynchronous terminal that has received the “Origination” message from the CC of the asynchronous terminal in step S2 is connected to the RRC in the asynchronous wireless network 720 including the base / control station called an asynchronous wireless network (Radio Network Controller). In this case, DCCH (Dedicated Control Channel) can be used. Accordingly, the RRC of the asynchronous terminal transmits an “RRC connection request” ('RRC Connection Request') message to the RRC of the asynchronous wireless network 720 to request an RRC connection.
[0093]
In step S3, the RRC 721 of the asynchronous wireless network that has received the “RRC connection request” ('RRC Connection Request') from the RRC 713 of the asynchronous terminal 710 uses the information in the message sent by the asynchronous terminal 710 to communicate with the asynchronous terminal 710. After performing the RRC connection, the asynchronous terminal 710 is notified of the completion of the RRC connection via an “RRC Connection Setup” (“RRC Connection Setup”) message, and the DCCH information to be used with the asynchronous terminal 710 is notified. Provide to asynchronous terminal 710.
[0094]
In step S4, the RRC of the asynchronous terminal that has received the “RRC Connection Setup” ('RRC Connection Setup') message from the asynchronous wireless network stores the DCCH information that it should use and sets the DCCH that it should use. To do. Then, the RRC of the asynchronous terminal transmits information on the capability possessed by the asynchronous terminal to the RRC of the asynchronous wireless network using a “user capability information” (“UE Capability Information”) message.
[0095]
In step S5, the RRC of the asynchronous wireless network that has received the “User Capability Information” (“UE Capability Information”) message from the RRC of the asynchronous terminal stores information on the capabilities of the asynchronous terminal, and “ A 'UE Capability Confirm' message is transmitted to the RRC of the asynchronous terminal.
[0096]
In step S6, the asynchronous mobile station that has received the “UE Capability Confirm” message from the RRC of the asynchronous wireless network sends an “Origination” message to the RRC of the asynchronous wireless network “initial direct”. Transmission is performed using a message “Initial Direct Transfer”. An 'Initial Direct Transfer' message is a message defined in the RRC protocol specification for transmitting a protocol entity message belonging to the NAS between the RRC of the asynchronous terminal and the RRC of the asynchronous wireless network. is there. That is, an “Initial Direct Transfer” message includes an “Origination” message as a part of a parameter and is transmitted.
[0097]
In step S7, the RRC of the asynchronous wireless network that received the “Direct Transfer” RRC message from the RRC of the asynchronous terminal extracts and analyzes the “Origination” message from this message and stores the necessary information. To do. Then, the “call” (“CM Service Request”) message received to notify that the “call origination” message has arrived from the asynchronous terminal to the synchronous core network 730 is received. Origination) message is transmitted.
[0098]
In step S8, the synchronous core network that has received the “CM Service Request” (“CM Service Request”) message from the asynchronous wireless network attempts to talk with the information of the asynchronous terminal that has requested “Call Origination”. Asynchronous terminal information and various information such as requested services are stored, and the information necessary to allocate wired resources that can be communicated between the asynchronous wireless network and the synchronous core network can communicate with the asynchronous wireless network and the asynchronous terminal. An 'Assignment Request' message to allocate radio resources is transmitted to the asynchronous radio network.
[0099]
The asynchronous wireless network that has received the “Assignment Request” message from the synchronous core network in step S9 sets a wired resource that can communicate with the synchronous core network and allocates a wireless resource that can communicate with the asynchronous terminal. Perform the process. In order to allocate radio resources, the RRC of the asynchronous radio network firstly sends a “Ciphering Mode Command” message containing information on encryption for security of information sent by the asynchronous terminal during a call. Is transmitted to the RRC of the asynchronous terminal using a “Downlink Direct Transfer” message.
[0100]
In step S10, the RRC of the asynchronous terminal that has received the “Ciphering Mode Command” message via the “Downlink Direct Transfer” message from the RRC of the asynchronous wireless network, This information is transmitted to an MM (Mobility Management) belonging to the NAS of the asynchronous terminal using a data transfer indication primitive supported by DC-SAP.
[0101]
In step S11, the MM of the asynchronous terminal that has received the “Ciphering Mode Command” ('Ciphering Mode Command') message from the RRC of the asynchronous terminal stores information on the encryption and supports a response to this by DC-SAP. A “Ciphering Mode Complete” message is transmitted to the RRC of the asynchronous terminal using a Data Transfer Request primitive.
[0102]
In step S12, the RRC of the asynchronous terminal that has received the “Ciphering Mode Complete” message from the MM of the asynchronous terminal transmits “Uplink Direct Transfer” (“Uplink Direct Transfer”) to the RRC of the asynchronous wireless network. ) The message is used to transmit a “Ciphering Mode Complete” message.
[0103]
In step S13, the RRC of the asynchronous wireless network that has received the “Ciphering Mode Complete” message from the RRC of the asynchronous terminal recognizes that the setting for encryption has been completed, and sets the radio resource. For this purpose, a “Channel Assignment” message having basic radio resource information is transmitted to the RRC of the asynchronous terminal using a “Downlink Direct Transfer” message.
[0104]
In step S14, the RRC of the asynchronous terminal that has received the “Channel Assignment” message from the RRC of the asynchronous wireless network performs “user side start connection establishment completion” (UE Side Initiated Connection Establishment Confirm) is transmitted to CC of asynchronous terminal using primitive. The CC of the asynchronous terminal that has received the “Channel Assignment” message from the RRC of the asynchronous terminal stores the information in this message. This message may be replaced by a “Radio Bearer Assignment Setup” message.
[0105]
In step S15, the RRC of the asynchronous radio network transmits a “Channel Assignment” message, and then substantially assigns “radio direction assignment” for setting radio resources between the asynchronous radio network and the terminal. A "setting"('Radio Bearer Assignment Setup') RRC message is transmitted to the RRC of the asynchronous terminal.
[0106]
In step S16, the RRC of the asynchronous terminal that has received the “Radio Bearer Assignment Setup” message from the RRC of the asynchronous radio network stores information necessary for setting radio resources, and other information. The information is sent to the asynchronous terminal using the “Radio Bearer Assignment Setup” message using the IF Side Initiated Radio Access Bearer Establishment Indication primitive supported by DC-SAP. To CC. Thereafter, radio resources are set using the stored information.
[0107]
In step S17, the CC of the asynchronous terminal that has received the “Radio Bearer Assignment Setup” message from the RRC of the asynchronous terminal stores the information in the message and supports the IF-side start radio supported by DC-SAP. “Radio Bearer Assignment Setup Complete” is transmitted to the RRC of the asynchronous terminal using an IF Side Initiated Radio Access Bearer Establishment Response primitive.
[0108]
In step S18, the RRC of the asynchronous terminal that has received the “Radio Bearer Assignment Setup Complete” message from the CC of the asynchronous terminal completes the setting of the radio resources, and then changes to the RRC of the asynchronous wireless network. “Radio Bearer Setup Complete” RRC message is transmitted.
[0109]
In step S19, the RRC of the asynchronous radio network that has received the “Radio Bearer Setup Complete” ('Radio Bearer Setup Complete') RRC message from the RRC of the asynchronous terminal recognizes that the radio resource setup has been completed, By transmitting a “Service Connect Message” (“Service Connect Message”) to the RRC of the asynchronous terminal using a “Direct Link” (“Downlink Direct Transfer”) message, the configuration information for the service requested by the asynchronous terminal is transmitted to the asynchronous terminal. As a result, the asynchronous terminal can perform call processing according to the service configuration information.
[0110]
In step S20, the RRC of the asynchronous terminal that has received the “Service Connect Message” from the RRC of the asynchronous wireless network uses a data transfer indication primitive supported by DC-SAP. Then, a “Service Connect Message” is transmitted to the CC of the asynchronous terminal.
[0111]
In step S21, the CC of the asynchronous terminal that has received the "Service Connect Message"('Service Connect Message') from the RRC stores the service configuration information and supports a data transfer request (Data Transfer Request supported by DC-SAP). ) Transmit a “Service Connect Completion” message using the primitive.
[0112]
In step S22, the RRC of the asynchronous terminal that has received the “Service Connect Completion” message from the CC of the asynchronous terminal uses the “Uplink Direct Transfer” message to “ A 'Service Connect Completion' message is transmitted to the RRC of the asynchronous wireless network.
[0113]
In step S23, the RRC of the asynchronous wireless network that has received the “Service Connection Completion” message from the RRC of the asynchronous terminal recognizes that the service configuration information setting has been completed and the radio resource setting has been completed. Then, an “Assignment Complete” message is transmitted to the synchronous core network in order to inform the synchronous core network that the asynchronous terminal is ready to talk.
[0114]
In step S24, the synchronous core network that has received the “Assignment Complete” message from the asynchronous wireless network recognizes that the asynchronous terminal is ready to talk, and waits until it can talk. In this sense, a ring back tone is transmitted to the RRC of the asynchronous wireless network using an “Alert” message.
[0115]
In step S25, the asynchronous wireless network that has received the “Alert” message from the exchange in the synchronous core network uses the “Downlink Direct Transfer” message. Transmit an “Alert” message to the RRC of the asynchronous terminal.
[0116]
In step S26, the RRC of the asynchronous terminal that has received the “Alert” message from the RRC of the asynchronous wireless network uses a data transfer indication primitive supported by DC-SAP. Transmit to CC of asynchronous terminal. After receiving the “Alert” message, the CC of the asynchronous terminal causes the user to generate a sound (Tone) in conjunction with the hardware. In this way, the asynchronous terminal and the synchronous core network can be linked.
[0117]
[Embodiment 2]
FIG. 8 attached is a flowchart showing a second embodiment of the call processing method in the asynchronous mobile communication system according to the present invention.
[0118]
Here, reference numeral 710 indicates an asynchronous terminal (MS), reference numeral 711 is a call processing unit (CC), 712 is a mobility management unit (MM), and 713 is a radio resource control unit (RRC). is there. As described above, the call processing unit (CC), the mobility management unit (MM), and the radio resource control unit (RRC) are provided in the asynchronous terminal (MS).
[0119]
Reference numeral 720 denotes an asynchronous radio network (UTRAN), and reference numeral 721 denotes a radio resource control unit (RRC) provided in a control station (asynchronous radio network) in the asynchronous radio network 720.
[0120]
Reference numeral 730 denotes an ANSI-41 network as a synchronous core network, reference numeral 731 is a mobility management unit (MM), reference numeral 732 is a call processing unit (CC), and the mobility management The unit 731 and the call processing unit 732 are provided in a mobile communication switch (MSC) in the synchronous core network 730.
[0121]
Such an interlocking structure is a structure in which an asynchronous wireless network and a synchronous core network of an asynchronous mobile communication system are interlocked. The call processing method (call release process) in this case is as follows.
[0122]
First, in step S31, when the call is completed, the CC of the asynchronous terminal requests the lower RRC to release the radio resource and the wired resource by using a data transfer request primitive supported by DC-SAP. A “Release Order” message is transmitted.
[0123]
In step S32, the RRC of the asynchronous terminal that has received this message uses the “Uplink Direct Transfer” message to send a “Release Order” message to the RRC of the asynchronous wireless network. Transmit to.
[0124]
In step S33, the asynchronous wireless network that has received this message recognizes that the asynchronous terminal is requesting release of the wireless resource and the wired resource, and requests this from the CC of the exchange in the synchronous core network. Transmit a 'Clear Request' message.
[0125]
Upon receiving this message in step S34, the CC of the exchange in the synchronous core network recognizes that the asynchronous terminal requests release of the wireless resource and the wired resource, and asynchronously issues an instruction to release the wired resource and the wireless resource. Transmit a 'Clear Command' message to inform the wireless network.
[0126]
The asynchronous wireless network that has received this message in step S35 receives a “release request” (“Release Order”) message as a response to the “Release Request” message requested by the asynchronous terminal in order to start releasing the wireless resource and the wired resource. 'Release Order') message is transmitted to the RRC of the asynchronous terminal, and release of the wireless resource and the wired resource is started.
[0127]
In step S36, the RRC of the asynchronous terminal that has received this message asynchronously sends a “Release Order” message using a Data Transfer Indication primitive that supports the message with DC-SAP. Transmit to the terminal CC.
[0128]
In order to release the radio resource in step S37, the RRC of the asynchronous radio network transmits a “radio direction release” ('Radio Bearer Release') RRC message to the RRC of the asynchronous terminal.
[0129]
In step S38, the RRC of the asynchronous terminal that has received this message releases the radio dedicated resource and provides this fact in DC-SAP. IF Side Initiated Radio Access Bearer Release Indication primitive Is used to transmit a “Radio Direction Release” ('Radio Bearer Release') message to the higher-level CC.
[0130]
The CC of the asynchronous terminal that has received this message in step S39 recognizes that the radio dedicated resource between the asynchronous terminal and the asynchronous wireless network has been released, and the IF side that supports the response message with DC-SAP A “Radio Bearer Release Complete” message is transmitted to the lower RRC using an IF Side Initiated Radio Access Bearer Release Indication primitive.
[0131]
In step S40, the RRC of the asynchronous terminal that has received this message sends a “Radio Bearer Complete” RRC message informing that the release of the dedicated radio resource with the asynchronous wireless network is complete. To RRC.
[0132]
The RRC of the asynchronous radio network that has received this message in step S41 transmits an "RRC connection release"('RRC Connection Release') RRC message to the RRC of the asynchronous terminal to release the layer 3 signaling and the radio shared resource. .
[0133]
The RRC of the asynchronous terminal that has received this message in step S42 recognizes that it should release the layer 3 signaling and the wireless shared resource with the DS asynchronous wireless network, and asynchronously releases the wireless shared resource. After transmitting the “RRC Connection Release Complete” RRC message to the RRC of the wireless network, the layer 3 signaling with the asynchronous wireless network and the wireless shared resource are released.
[0134]
The RRC of the asynchronous wireless network that received this message in step S43 recognizes that the layer 3 signaling with the terminal and the radio shared resource have been released, and all communication resources with the asynchronous terminal and release of the signaling are completed. This is reported to the CC protocol entity of the switch via “Clear Complete”.
[0135]
In this process, the connected call is released.
[0136]
FIG. 9 attached is a flowchart showing a call release method when a call release signal is first generated in the mobile communication exchange in the synchronous core network.
[0137]
First, in step S51, a “Clear Command” message is transmitted in order to inform the asynchronous wireless network of a command to release the wired resource and the wireless resource by the exchange in the synchronous core network.
[0138]
The asynchronous wireless network that has received this message in step S52 starts the release of the wireless resource and the wired resource, and in response to the “Release Request” (“Release Order”) message requested by the asynchronous terminal, the “Release Request” ( Release Order ') message is transmitted to the RRC of the asynchronous terminal, and release of the wireless resource and the wired resource is started.
[0139]
The RRC of the asynchronous terminal that has received this message in step S53 uses the data transfer indication (Data Transfer Indication) primitive supported by DC-SAP to send the “Release Request” message to the asynchronous terminal. To CC.
[0140]
In order to release the radio resource in step S54, the RRC of the asynchronous radio network transmits a “radio direction release” ('Radio Bearer Release') RRC message to the RRC of the asynchronous terminal.
[0141]
The RRC of the asynchronous terminal that received this message in step S55 releases the radio dedicated resource, and provides an IF side initiated radio access bearer release indication (IF Side Initiated Radio Access Bearer Release Indication) primitive that provides this fact in DS-SAP. Use it to transmit a “Radio Bearer Release” message to a higher-level CC.
[0142]
The CC of the asynchronous terminal that has received this message in step S56 recognizes that the radio dedicated resource between the asynchronous terminal and the asynchronous wireless network has been released, and starts the IF side that supports the response message with DC-SAP. A “Radio Bearer Release Complete” message is transmitted to the lower RRC using an IF Side Initiated Radio Access Bearer Release Indication primitive.
[0143]
The RRC of the asynchronous terminal that has received this message in step S57 transmits an “Radio Bearer Release Complete” RRC message that informs that the cancellation of the dedicated radio resources with the asynchronous radio network is complete. Transmit to network RRC.
[0144]
The RRC of the asynchronous radio network that has received this message in step S58 transmits an "RRC connection release"('RRC Connection Release') RRC message to the RRC of the asynchronous terminal to release the layer 3 signaling and the radio shared resource. .
[0145]
The RRC of the asynchronous terminal that has received this message in step S59 recognizes that the layer 3 signaling with the DS asynchronous radio network and the radio shared resource should be released, and releases the radio shared resource to the RRC of the asynchronous radio network. “RRC connection release complete” ('RRC Connection Release Complete') After transmitting the RRC message, the layer 3 signaling and the radio shared resource with the asynchronous radio network are released.
[0146]
The RRC of the asynchronous radio network that received this message in step S60 recognizes that the layer 3 signaling with the terminal and the radio shared resource have been released, and all communication resources with the asynchronous terminal and release of the signaling are completed. This is reported to the CC protocol entity of the switch via “Clear Complete”.
[0147]
[Embodiment 3]
FIG. 10A and FIG. 10B attached are flowcharts showing a handoff processing method in the asynchronous mobile communication system according to the present invention. In this case, the synchronous core network is linked to the source asynchronous wireless network, and the target asynchronous wireless network is linked to the synchronous core network.
[0148]
Here, reference numeral 740 is an asynchronous terminal (MS), 741 is a call processing unit (CC), and 742 is a radio resource control unit (RRC) included in the asynchronous terminal 740.
[0149]
Reference numeral 750 denotes a source asynchronous radio network 750, and 751 denotes a radio resource control unit (RRC) provided in a control station in the asynchronous radio network.
[0150]
Reference numeral 760 denotes a synchronous core network (ANSI-41 network), 761 denotes a radio resource control unit (RR) provided in the synchronous core network, and 762 denotes a call provided in the synchronous core network. A processing unit (CC) is shown.
[0151]
Reference numeral 770 denotes a target asynchronous radio network linked to the synchronous core network 760, and 771 denotes a radio resource control unit (RRC) provided in the target asynchronous radio network 770.
[0152]
First, in step S71, the RRC of the source DS asynchronous radio network provides the RRC of the DS asynchronous terminal with information that can measure the performance and power of the radio link. Using this information, the asynchronous terminal measures the radio link, transmits the result to the RRC of the source DS asynchronous radio network, and determines whether handover is possible based on this result.
Accordingly, the RRC of the source DS asynchronous radio network transmits a “Measurement Control” (RCM) RRC message to the RRC of the DS asynchronous terminal.
[0153]
In step S72, the asynchronous terminal that has received the “Measurement Control” RRC message from the RDS of the source DS asynchronous wireless network uses this information to measure the performance and power of the radio link, and the result is “Measurement Report” ('Measurement Report') RRC message is transmitted to RRC of source DS asynchronous radio network. The RRC of the source DS asynchronous radio network that receives the “Measurement Report” ('Measurement Report') RRC message uses this information to determine whether to perform handover.
[0154]
If it is determined in step S73 that the source DS asynchronous radio network is to be handed over, the source DS asynchronous radio network synchronously sends a “Handover Required” message requesting handover. It is transmitted to the RR of the exchange (MSC) in the core network. This message contains information about the target DS asynchronous radio network to be handed over.
[0155]
The RR of the exchange in the synchronous core network that has received the “Handover Required” (“Handover Required”) message from the source DS asynchronous radio network in step S74 should analyze the information in the message and perform the handover. Target DS Ascertains asynchronous wireless network information. Target The target DS asynchronous radio network is transmitted with a “Handoff Request” message to inform the target DS asynchronous radio network that a handover has occurred.
[0156]
The target DS asynchronous wireless network that has received the “Handoff Request” (“Handoff Request”) message from the RR of the exchange in the synchronous core network in step S75 recognizes that the handover occurs, and the handover is performed. The generated source DS asynchronous wireless network information and asynchronous terminal information are analyzed and stored, and prepared for handover. In response to this message, a "Handover Request Ack"('Handover Request Ack') message is transmitted to the exchange in the synchronous core network.
[0157]
In step S76, the RR of the exchange in the synchronous core network that has received the “Handover Request Ack” message from the Target DS asynchronous radio network is the Target DS asynchronous radio network. Recognizing that the network is ready to hand over, the source DS asynchronous radio network will receive a “handoff command” ('Handoff
Command ') message is transmitted.
[0158]
The source DS asynchronous radio network that has received the “Handoff Command” (“Handoff Command”) message from the RR of the exchange in the synchronous core network in Step S77 is the target DS information that is to be handed over. Is transmitted to the RRC of the DS asynchronous terminal via a 'Physical Channel Reconfiguration' RRC message.
[0159]
In step S78, the RRC of the DS asynchronous terminal that has received the “Physical Channel Reconfiguration” message from the RRC of the source DS asynchronous radio network prepares for handover to the Target DS asynchronous radio network. To do. In response, an “MS Ack (acknowledgement) command” ('MS Ack Order') message is transmitted to the RRC of the source DS asynchronous wireless network.
[0160]
The RRC of the source DS asynchronous wireless network that has received the “MS Ack (acknowledgement) command” ('MS Ack Order') message in step S79 recognizes that the handoff will be started at the asynchronous terminal, and the handoff start is synchronized with the synchronous core network. It is transmitted to the RR of the internal exchange using a “Handoff Commenced” message.
[0161]
In step S80, a wireless link is set up and synchronized between the asynchronous terminal and the target DS asynchronous wireless network.
[0162]
In step S81, the RRC of the asynchronous terminal uses the “RRC Connection Re-establishment” ('RRC Connection Re-establishment ”in order to use Layer 3 signaling and DCCH (Dedicated Control Channel) with the Target DS asynchronous wireless network. Request ') Transmit the RRC message to the RRC of the Target DS asynchronous wireless network.
[0163]
The RRC of the target DS asynchronous wireless network that received this message in step S82 uses the "RRC connection re-establishment request"('RRCConnection') in order to provide layer 3 signaling setting information and DCCH information to the asynchronous terminal. Re-establishment ') Transmit the RRC message to the RRC of the asynchronous terminal.
[0164]
Upon receiving this message in step S83, the RRC of the asynchronous terminal analyzes the message information, sets the target 3 DS signaling and DCCH with the Target DS asynchronous radio network, and sets the target to complete (Target) DS asynchronous. A “RRC Connection Re-establishment Complete” message is transmitted to the RRC of the target asynchronous wireless network for transmission to the RRC of the wireless network.
[0165]
In step S84, after the asynchronous terminal completes the radio link setting and synchronization matching with the target asynchronous radio network, and completes the signaling setting for the radio protocol, the RRC of the asynchronous terminal confirms that the handoff is completed. It is transmitted to the RRC of the Target DS asynchronous radio network via a 'Physical Channel Reconfiguration Complete' RRC message.
[0166]
The target (DS) asynchronous wireless network that has received this message in step S85 recognizes that the handoff has been completed, and “handoff complete” indicates that the terminal is currently communicating with the target (Target) DS asynchronous wireless network. It is transmitted to the RR of the exchange in the synchronous core network via a ('Handoff Complete') message.
[0167]
The RR of the exchange in the synchronous core network that has received this message in step S86 reports the completion of the handoff through the internal communication with the CC. The CC of the exchange in the synchronous core network that recognizes the completion of the handoff sends a “Clear Command” to the source DS asynchronous wireless network to release the wired and wireless resources of the source DS asynchronous wireless network. Transmit the message.
[0168]
The RDS of the source DS asynchronous wireless network that received this message in step S87 recognizes the fact that the radio resource and the wired resource should be released, and in order to release the radio resource, the RRC of the asynchronous terminal will "Release"('Radio Bearer Release') RRC message is transmitted.
[0169]
The RRC of the asynchronous terminal that has received this message in step S88 releases the radio dedicated resource, and uses the IF Side Initiated Radio Access Bearer Release Indication primitive to provide this fact in DC-SAP. Use it to transmit a “Radio Bearer Release” message to a higher-level CC.
[0170]
The CC of the asynchronous terminal that has received this message in step S89 recognizes that the radio dedicated resource between the asynchronous terminal and the source DS asynchronous radio network has been released, and an IF that supports the response message with DC-SAP. A “Radio Bearer Release Complete” message is transmitted to the lower RRC using an IF Side Initiated Radio Access Bearer Release Indication primitive.
[0171]
The RRC of the asynchronous terminal that has received this message in step S90 sends a “Radio Direction Release Complete” ('Radio Bearer Release Complete') RRC message that reports that the release of the dedicated radio resources with the source DS asynchronous radio network has been completed. Source DS Transmit to RRC of asynchronous radio network.
[0172]
The RRC of the source asynchronous radio network that received this message in step S91 sends an “RRC Connection Release” ('RRC Connection Release') RRC message to the RRC of the asynchronous terminal in order to release the layer 3 signaling and the radio shared resource. To transmit.
[0173]
The RRC of the asynchronous terminal that has received this message in step S92 recognizes that the layer 3 signaling with the source DS asynchronous radio network and the radio shared resource should be released, and releases the radio shared resource. After transmitting the “RRC Connection Release Complete” RRC message to the RRC of the asynchronous radio network, the layer 3 signaling and the radio shared resource with the source DS asynchronous radio network are released.
[0174]
The source DS asynchronous wireless network that received this message in step S93 recognizes that the layer 3 signaling and the wireless shared resource with the asynchronous terminal have been released, and releases all communication resources and signaling with the asynchronous terminal. The CC of the exchange is informed via the “Clear Complete”.
[0175]
Through such a process, a hard handoff is performed between the source asynchronous radio network, the synchronous core network, and the target asynchronous radio network.
[0176]
FIG. 11A and FIG. 11B attached are flowcharts showing a handoff processing method in the asynchronous mobile communication system according to the present invention. In this case, the synchronous core network is linked to the source asynchronous wireless network, and the target synchronous wireless network is linked to the synchronous core network.
[0177]
Here, reference numeral 740 is an asynchronous terminal (MS), 741 is a call processing unit (CC), 742 is a radio resource control unit (RRC) provided in the asynchronous terminal 740, and reference numeral 743 indicates a synchronous RR. .
[0178]
Reference numeral 750 denotes a source asynchronous radio network 750, and 751 denotes a radio resource control unit (RRC) provided in a control station in the asynchronous radio network.
[0179]
Reference numeral 760 indicates a synchronous core network (ANSI-41 network), 761 is a radio resource control unit (RR) provided in the synchronous core network, and 762 is provided in the synchronous core network. A call processing unit (CC) is shown.
[0180]
Reference numeral 780 indicates a target synchronous radio network that is linked to the synchronous core network 760.
[0181]
First, in step S101, the RRC of the source DS asynchronous radio network (RNC) provides the RRC of the asynchronous terminal with information that can measure the performance and power of the radio link. Using this information, the asynchronous terminal measures the radio link, transmits the result to the RRC of the source DS asynchronous radio network, and determines whether handover is possible based on this result. Therefore, the RRC of the source DS asynchronous radio network transmits a “Measurement Control” RRC message to the RRC of the asynchronous terminal.
[0182]
In step S102, the asynchronous terminal that has received the “Measurement Control” RRC message from the RRC of the source DS asynchronous radio network uses this information to measure the performance and power of the radio link, and the result is “measured”. Report (Measurement Report) RRC message is transmitted to RRC of source DS RNC. The RRC of the source DS RNC that has received the “Measurement Report” RRC message uses this information to determine whether to handoff.
[0183]
If the handoff is determined as described above, in step S103, the source DS RNC transmits a “Handoff Required” message requesting handoff to the RR of the exchange (MSC) in the synchronous core network. This message contains information about the Target MC system to be handed off.
[0184]
In step S104, the RR of the exchange that has received the “Handoff Required” message from the source DS RNC receives the message, the source DS RNC requests a handover, analyzes the information element of the message, Target MC that should be handed over (Target) Know the MC system information. The target MC system (Handoff Request) message is transmitted to the target MC system and the target MC system (synchronous wireless network) is notified of the occurrence of the handover. The Target MC system then checks the resources that can be allocated to the terminal that is currently handing off to its system.
[0185]
Assuming that there is a resource that can be allocated to the terminal in the target MC system in step S105, the target MC system allocates an appropriate resource and connects with the call of the terminal that should be handed off. Then, the Target MC system transmits a “Null Forward Traffic Channel Frame” to the terminal that should perform handoff.
[0186]
In step S106, as a response to this message, the exchange transmits a "Handoff Request" (Handoff Request) Ack message to the RR of the exchange in the synchronous core network.
[0187]
In step S107, the RR of the exchange that received the “Handoff Request Ack” message from the Target MC system recognizes that the Target MC system is ready to handoff, and sends it to the source DS RNC. Transmit a "Handoff Command" message.
[0188]
In step S108, the source DS RNC that has received the “Handoff Command” message from the RR of the exchange sends the target MC system information to be handed off to the “Inter System Handover Command” (Inter System Handover Command) Transmit to RRC of asynchronous terminal via RRC message.
[0189]
In step S109, the RRC of the asynchronous terminal that has received the “Inter System Handover Command” message from the RRC of the source DS RNC prepares for handoff to the Target MC system. As a response, an “MS Ack (acknowledgement) command” (MS Ack Order) message is transmitted to the RRC of the source DS RNC.
[0190]
The source DS RNC that received the “MS Ack Order” (MS Ack Order) message in step S110 recognizes that it will start handoff at the asynchronous terminal and informs the RR of the switch to “handoff” to report the handoff start. Transmit using a “Handoff Commenced” message.
[0191]
In step S111, the asynchronous mobile station transmits a “Reverse Traffic Channel Frame” and a “Traffic channel preamble” to the Target MC system, and transmits the asynchronous mobile station and target (Target ) Set up and synchronize radio links for mutual communication with the MC system.
[0192]
In step S112, after the asynchronous terminal completes the radio link setting and synchronization matching with the target RNC and completes the signaling setting for the radio protocol, the asynchronous terminal RRC confirms that the handoff is completed. ”(Handoff completion) message to target MC system.
[0193]
The target MC system that has received the “Handoff completion” message from the asynchronous terminal in step S113 transmits a “BS Ack (approval) request” (BS Ack Order) message as a response to this message.
[0194]
In step S114, the Target MC system recognizes that the handoff has been completed, and a “Handoff Complete” message is sent to report that the terminal is currently communicating with the Target MC system. To the RR of the exchange via
[0195]
The RR of the exchange that has received this message in step S115 can report the completion of the handoff through internal communication with the CC. The CC of the exchange that recognizes the completion of the handoff transmits a “Clear Command” message to the source DS RNC to release the wired and wireless resources of the source DS RNC.
[0196]
The RRC of the source DS RNC that received this message in step S116 recognizes the fact that the radio resource and the wired resource should be released, and “releases radio direction” to the RRC of the asynchronous terminal to release the radio resource. (Radio Bearer Release) Transmits an RRC message.
[0197]
The RRC of the asynchronous terminal that receives this message in step S117 releases the radio dedicated resource and provides this fact in DC-SAP “IF Side Initiated Radio Access Bearer Release Indication”. A “Radio Bearer Release” message is transmitted to a higher-level CC using a primitive.
[0198]
The CC of the asynchronous terminal that has received this message in step S118 recognizes that the radio dedicated resource between the asynchronous terminal and the source DS RNC has been released, and supports a response message for this in the “IF side” The “Radio Bearer Release Complete” message is transmitted to the lower RRC using the “IF Side Initiated Radio Access Bearer Release Indication” primitive.
[0199]
The RRC of the terminal that has received this message in step S119 sends a “Radio Bearer Complete RRC” message to the RRC of the source DS RNC that reports that the release of the radio dedicated resource with the source DS RNC is complete. To transmit.
[0200]
The RRC of the source RNC that has received this message in step S120 transmits an “RRC Connection Release” RRC message to the RRC of the asynchronous terminal in order to release the layer 3 signaling and the radio shared resource.
[0201]
The RRC of the terminal that has received this message in step S121 recognizes that the layer 3 signaling with the source DS RNC and the radio shared resource should be released, and that the source DS RNC releases the radio shared resource. After transmitting the RRC connection release complete to the RRC of the RRC, the layer 3 signaling and the radio shared resource with the source DS RNC are released.
[0202]
The source DS RNC that received this message in step S122 recognizes that the layer 3 signaling with the asynchronous terminal and the radio shared resource have been released, and all communication resources with the asynchronous terminal and release of the signaling are completed. This is reported to the CC of the exchange via a “Clear Complete” message.
[0203]
12A and 12B attached are flowcharts showing a handoff processing method in the asynchronous mobile communication system according to the present invention. In this case, the synchronous core network is linked to the source synchronous radio network, and the target asynchronous radio network is linked to the synchronous core network. When the source synchronous radio network requests handoff to the target asynchronous radio network, is there.
[0204]
Here, reference numeral 810 is a synchronization terminal (MS), 811 is a call processing unit (CC), 812 is a radio resource control unit (RRC) included in the synchronization terminal 810, and reference numeral 813 indicates a synchronization RR. .
[0205]
Reference numeral 800 indicates a synchronous wireless network of a synchronous communication system.
[0206]
Reference numeral 760 denotes a synchronous core network (ANSI-41 network), 763 denotes a mobility management unit (MM) provided in the synchronous core network, and 761 denotes a synchronous core network. A call processing unit (CC) is shown.
[0207]
Reference numeral 790 denotes a target asynchronous radio network, and 791 denotes a radio resource control unit (RRC) provided in a control station in the asynchronous radio network.
[0208]
In step S131, the source MC system sends a message “Candidate Frequency Search Request” (Candidate Frequency Search Request), which is a message requesting measurement of surrounding radio links that can be used through handoff, although it is not currently used for RR of the asynchronous terminal. Search Request) message is transmitted.
[0209]
The RR of the terminal that has received this message in step S132 recognizes that it should measure the surrounding radio link, and transmits a “Candidate Frequency Search Response” message to the source MC system as a response. To do.
[0210]
The source MC system that has received this message in step S133 displays information related to the measurement such as the information on the surrounding radio links that the terminal should measure, the measurement range, the measurement period, and the like as “Candidate Frequency Control”. The message is transmitted to the RR of the terminal.
[0211]
The RR of the terminal that has received this message in step S134 stores information on neighboring radio links and information related to measurement. Then, after measuring information on the surrounding wireless links according to the stored information, the measurement result is transmitted to the source MC system using a “Candidate Frequency Search Report” message. The source MC system that has received this information uses this information to determine whether to handoff.
[0212]
When the handoff is determined by the source MC system, in step S135, the source MC system transmits a “Handoff Required” message for requesting handoff to the RR of the exchange (MSC) in the synchronous core network. This message contains information about the Target DS RNC to be handed off.
[0213]
The RR of the exchange receiving this message in step S136 recognizes that the source MC system is requesting handoff by receiving this message, analyzes the information element of the message, and obtains the Target DS RNC information. To grasp. Then, a “handoff request” (Handoff Request) message is transmitted to the target DS RNC so as to inform the target DS RNC that a handoff will occur.
[0214]
Target DS RNC receiving this message recognizes that a handoff occurs, analyzes and stores the information of the source MC system where the handoff occurs and the information of the terminal, and currently hands off the terminal to its own system. Check the resources that can be allocated to.
[0215]
In step S137, if there is a resource that can be allocated to the terminal to be handed off to the target DS RNC, a “handoff request” (Handoff Request) Ack message is sent as the received “handoff request” (Handoff Request) response. To RR.
[0216]
The RR of the exchange that received this message in step S138 recognizes that the Target DS RNC is ready to handoff, and sources the “Handoff Command” message requesting handoff to the source MC system. MC
Transmit to the system.
[0217]
The source MC system that has received this message in step S139 transmits an “Extended Handoff Direction” (Extended Handoff Direction) message or a “General Handoff Direction” (General Handoff Direction) message requesting handoff to the RR of the terminal.
[0218]
The RR of the terminal that receives this message in step S140 prepares for handover to the target DS RNC and sends an “MS Ack Order” message to the source MC system as a response. To do.
[0219]
The source MC system that has received this message in step S141 recognizes that the handoff is to be started at the terminal, and transmits it to the RR of the exchange using the “Handoff Commenced” message to report the handoff start. .
[0220]
In step S142, a radio link is set up and synchronized for mutual communication between the terminal and the target DS RNC.
[0221]
In step S143, the RRC of the terminal performs “RRC Connection Re-establishment” (RRC Connection Re-establishment) in order to use layer 3 signaling setting with the Target DS RNC and DCCH (Dedicated Control Channel). Request) Transmit RRC message to RRC of Target DS RNC.
[0222]
The DS-RRC of the Target DS RNC that received this message in step S144 performs “RRC Connection Re-establishment” (RRC Connection Re-establishment) to provide the terminal with layer 3 signaling configuration information and DCCH information. RRC message is transmitted to the RRC of the terminal.
[0223]
The RRC of the terminal that has received this message in step S145 analyzes the information of the message, sets the layer 3 signaling and DCCH with the target DS RNC, and sets the target to complete the setting. Transmit an RRC Connection Re-establishment Complete message to the Target RNC RRC for transmission to the entity.
[0224]
In step S146, after the terminal completes the radio link setting and synchronization matching with the target RNC and completes the signaling setting for the radio protocol, the terminal RRC confirms that the handoff has been completed. Intersystem Handover complete Transmit to RRC protocol entity of Target DS RNC via RRC message.
[0225]
The target DS RNC that received this message in step S147 recognizes that the handoff has been completed, and “handoff complete” (Handoff Complete) that the terminal and the target DS RNC are currently communicating. It is transmitted to the RR of the exchange via a message.
[0226]
The RR of the exchange that has received this message in step S148 can report the completion of handoff through internal communication with the CC. The CC of the exchange that recognizes the completion of the handoff transmits a “Clear Command” message to the source MC system in order to release the wired resource and the wireless resource of the source MC system.
[0227]
The source MC system that has received this message in step S149 releases all resources and signaling set in conjunction with the terminal.
[0228]
After all resources and all signaling with the terminal are released in step S150, the source MC system confirms that all resources and all signaling with the terminal have been released to the CC protocol entity of the switch. Transmit a “Clear Command” message for reporting.
[0229]
FIG. 13A and FIG. 13B attached are flowcharts showing a handoff processing method in the asynchronous mobile communication system according to the present invention. In this case, the synchronous core network is linked to the source asynchronous wireless network, and the analog wireless network is linked to the synchronous core network.
[0230]
Here, reference numeral 810 is a synchronous terminal (MS), 811 is a call processing unit (CC), and 812 is a radio resource control unit (RRC) provided in the synchronous terminal 810.
[0231]
Reference numeral 800 indicates an asynchronous wireless network of an asynchronous communication scheme, and reference numeral 821 indicates an RRC in the asynchronous wireless network.
[0232]
Reference numeral 760 denotes a synchronous core network (ANSI-41 network), 763 denotes a mobility management unit (MM) provided in the synchronous core network, and 761 denotes a synchronous core network. A call processing unit (CC) is shown. Reference numeral 830 indicates an analog wireless network.
[0233]
First, in step S161, the RRC of the source DS RNC (asynchronous radio network) provides the RRC of the DS terminal with information that can measure the performance and power of the radio link. Using this information, the terminal measures the radio link and transmits the result to the RRC protocol entity of the source DS RNC, and handoff availability is determined based on this result. Accordingly, the RRC protocol entity of the source DS RNC transmits a “Measurement Control” RRC message to the RRC of the DS terminal.
[0234]
In step S162, the terminal that has received the “Measurement Control” RRC message from the RRC of the source DS RNC uses this information to measure the performance and power of the radio link and the result is “Measurement Report” ( Measurement Report) RRC message is transmitted to RRC of source DS RNC.
[0235]
“Measurement Report” The RRC of the source DS RNC that received the RRC message uses this information to determine whether to handoff.
[0236]
If handoff is determined, in step S163, the source DS RNC transmits a “Handoff Required” message requesting handoff to the RR of the exchange (MSC). This message includes information on a “Target Analog System” to be handed over.
[0237]
The RR of the exchange receiving this message in step S164 recognizes that the source DS RNC is requesting a handoff, analyzes the information elements of the message, and should perform the handoff (Target Analog System). System) information. A "Handoff Request" message is transmitted to the grasped "Target Analog System" to inform the "Target Analog System" that the handoff has occurred.
[0238]
The “Target Analog System” that has received the “Handoff Request” message from the RR of the exchange recognizes that a handoff has occurred, and the source DS RNC information and the terminal information Are analyzed, stored, prepared for handoff, and checked if there are resources to be allocated to the terminal that should be handed off.
[0239]
If there is a resource to be allocated to the terminal to be handed off, in step S165, the “Target Analog System” sends a “Handoff Request” to the RR of the exchange as the received “Handoff Request” response. "(Handoff Request) Ack message is transmitted.
[0240]
In step S166, the RR of the exchange that received the "Handover Request" Ack message from the "Target Analog System" is ready to be handed off by the "Target Analog System". And send a “Handoff Command” message to the source DS RNC.
[0241]
In step S167, the source DS RNC that has received the “Handoff Command” message from the RR of the exchange sends the “Target Analog System” information to be handed off to the RRC of the DS terminal “ “Handover Command” (Inter System Handover Command) Transmitted via RRC message.
[0242]
The RRC of the DS terminal that has received the “Inter System Handover Command” message from the RRC of the source DS RNC in step S168 prepares to handoff to the “Target Analog System”. In response, an “MS Ack Order” message is inserted into the RRC message “Direct Transfer” and transmitted to the RRC of the source DS RNC.
[0243]
The RRC of the source DS RNC that has received this message in step S169 recognizes that the handoff will start at the terminal, and transmits a “Handoff Commenced” message to report the handoff start to the RR of the exchange.
[0244]
In step S170, a wireless link is set up for mutual communication between the terminal and the “Target Analog System”, and “Vocoder” is initialized to exchange mutual signaling.
[0245]
After completing the known process in step S171, the “Target Analog System” recognizes that the handoff has been completed, and the terminal and the “Target Analog System” are currently communicating. A "Handoff Complete" message is transmitted to the RR of the exchange in order to report it.
[0246]
The RR of the exchange that has received this message in step S172 reports the completion of the handoff through the internal communication with the CC. The CC of the exchange that recognizes the completion of the handoff transmits a “Clear Command” message to the source DS RNC to release the wired and wireless resources of the source DS RNC.
[0247]
The RRC of the source DS RNC that has received this message in step S173 recognizes the fact that the radio resource and the wired resource should be released, and performs “radio direction release” ( Radio Bearer Release) Transmits RRC messages.
[0248]
The RRC of the terminal that has received this message in step S174 releases the radio dedicated resource, and provides this fact in DC-SAP “IF Side Initiated Radio Access Bearer Release Indication” primitive The Radio Bearer Release message is transmitted to the upper CC using.
[0249]
The CC of the terminal that has received this message in step S175 recognizes that the radio dedicated resource between the terminal and the source DS RNC has been released, and supports a response message for this in the “IF side start radio” A “Radio Bearer Release Complete” message is transmitted to the lower RRC using an “IF Side Initiated Radio Access Bearer Release Indication” primitive.
[0250]
The RRC of the terminal that has received this message in step S176 reports that the release of the radio dedicated resource with the source DS RNC has been completed. “Radio Bearer Release Complete” An RRC message is sent to the RRC of the source DS RNC. Transmit to.
[0251]
The RRC of the source RNC that has received this message in step S177 transmits an “RRC Connection Release” (RRC Connection Release) RRC message to the RRC protocol entity of the terminal in order to release the layer 3 signaling and the radio shared resource.
[0252]
The RRC of the terminal that receives this message in step S178 recognizes that the layer 3 signaling with the source DS RNC and the radio shared resource should be released, and that the radio shared resource is released. After transmitting the RRC connection release complete RRC message to the RRC, the layer 3 signaling and the radio shared resource with the source DS RNC are released.
[0253]
The source DS RNC that has received this message in step S179 recognizes that the layer 3 signaling with the terminal and the radio shared resource have been released, and that all communication resources with the terminal and the release of signaling have been completed. To the CC of the exchange via a “Clear Complete” message.
[0254]
【The invention's effect】
According to the “call processing and handoff processing method in an asynchronous mobile communication system” of the present invention described in detail above, smooth call processing even when the core network is connected to either the GSM-MAP network or the ANSI-41 network. And there is an advantage that handoff processing is possible.
[0255]
In addition, the above-described effect has an advantage that an asynchronous system subscriber can talk with a subscriber of a synchronous ANSI-41 network or another network.
[Brief description of the drawings]
FIG. 1A is a diagram showing a network interlocking structure of a conventional synchronous mobile communication system.
FIG. 1B is a diagram showing a network interlocking structure of a conventional asynchronous mobile communication system.
FIG. 2A is a diagram showing a protocol hierarchical structure of each part of a conventional synchronous mobile communication system.
FIG. 2B is a diagram showing a protocol hierarchical structure of each part of a conventional asynchronous mobile communication system.
FIG. 3A is a synchronous ANSI-41 core network interlocking structure diagram in the next generation synchronous mobile communication system.
FIG. 3B is an asynchronous GSM-MAP core network interlocking structure diagram in the next generation synchronous mobile communication system.
FIG. 3C is an asynchronous GSM-MAP core network interlocking structure diagram in the next generation asynchronous mobile communication system.
FIG. 3D is a synchronous ANSI-41 core network interlocking structure diagram in the next generation asynchronous mobile communication system.
FIG. 4A is a protocol layer structure diagram of a synchronous mobile communication system linked with an ANSI-41 core network in a next-generation mobile communication system.
FIG. 4B is a protocol layer structure diagram of a synchronous mobile communication system linked with a GSM-MAP core network in a next-generation mobile communication system.
FIG. 4C is a protocol layer structure diagram of an asynchronous mobile communication system linked to an ANSI-41 core network in a next-generation mobile communication system.
FIG. 4D is a protocol layer structure diagram of an asynchronous mobile communication system linked with a GSM-MAP core network in a next-generation mobile communication system.
FIG. 5 is an overall interlocking structure diagram when the core network in the asynchronous mobile communication system according to the present invention is an ANSI-41 network.
FIG. 6 is a diagram illustrating a relationship between a wired section interface and a wireless section interface when the core network in the asynchronous mobile communication system according to the present invention is an ANSI-41 network.
FIG. 7A is a first part of a flowchart showing a first embodiment of a call processing method in an asynchronous mobile communication system according to the present invention;
FIG. 7B is an intermediate part of the flowchart showing the first embodiment of the call processing method in the asynchronous mobile communication system according to the present invention.
FIG. 7C is a part at the end of the flowchart showing the first embodiment of the call processing method in the asynchronous mobile communication system according to the present invention.
FIG. 8 is a flowchart showing a second embodiment of the call processing method in the asynchronous mobile communication system according to the present invention.
FIG. 9 is a flowchart showing a third embodiment of the call processing method in the asynchronous mobile communication system according to the present invention.
FIG. 10A is the first half of a flowchart showing the first embodiment of the handoff processing method in the asynchronous mobile communication system according to the present invention;
FIG. 10B is the second half of the flowchart showing the first embodiment of the handoff processing method in the asynchronous mobile communication system according to the present invention.
FIG. 11A is the first half of a flowchart showing a second embodiment of the handoff processing method in the asynchronous communication system according to the present invention;
FIG. 11B is the second half of the flowchart showing the second embodiment of the handoff processing method in the asynchronous communication system according to the present invention;
FIG. 12A is the first half of a flowchart showing a third embodiment of the handoff processing method in the asynchronous communication system according to the present invention;
FIG. 12B is the latter half of the flowchart showing the third embodiment of the handoff processing method in the asynchronous communication system according to the present invention.
FIG. 13A is the first half of a flowchart showing a fourth embodiment of the handoff processing method in the asynchronous communication system according to the present invention;
FIG. 13B is the latter half of the flowchart showing the fourth embodiment of the handoff processing method in the asynchronous communication system according to the present invention;
[Explanation of symbols]
100 hybrid type sync terminal
110 Synchronous wireless network
120, 240 synchronous core network
130, 230 Asynchronous core network
210 Hybrid type asynchronous terminal
220 Asynchronous wireless network (UTRAN)

Claims (21)

An asynchronous terminal having a call processing unit (CC), a mobility management unit (MM) and a radio resource control unit (RRC), and an asynchronous radio network having a radio resource control unit, the asynchronous radio network being a synchronous core network In a call processing method in an asynchronous mobile communication system linked with
A first step of setting up a call when an outgoing call message occurs;
A second step of setting a channel between the asynchronous terminal and the asynchronous wireless network;
A third step of processing radio resource allocation basic information;
A fourth step of performing encryption settings;
A fifth step of setting radio resources;
A sixth step of performing the service configuration;
A seventh step of transmitting a call waiting message to the user ;
Consists of
The first step includes
An eighth step of transmitting an outgoing call message generated from the call processing unit of the asynchronous mobile station to the radio resource controller of the asynchronous mobile station,
A ninth step of requesting connection to the radio resource control unit of the radio network through a common control channel (CCCH ) ;
After receiving the connection request, a tenth step of transmitting a connection completion message and dedicated control channel (DCCH) information to the asynchronous terminal via the CCCH channel ;
Consists of
The second step includes
An eleventh step of setting the DCCH used in the asynchronous terminal using the DCCH information received from the asynchronous wireless network ;
A twelfth step of transmitting capability guidance information of the asynchronous terminal to the asynchronous wireless network via the DCCH ;
A thirteenth step of receiving a confirmation response to the asynchronous terminal capability guidance information from the asynchronous wireless network ;
A fourteenth step of transmitting the outgoing call message to the asynchronous wireless network via the DCCH ;
A call processing method in an asynchronous mobile communication system, comprising: The third step includes
A fifteenth step of storing a necessary message from the outgoing call message in the asynchronous wireless network;
A sixteenth step of transmitting a message that the outgoing call message has occurred to the synchronous core network; and
17th step of transmitting wired resource allocation information and wireless resource allocation information from the synchronous core network to the asynchronous wireless network;
An 18th step of setting the wired resource in the asynchronous wireless network;
A nineteenth step of transmitting the radio resource allocation basic information to the asynchronous terminal ;
2. The call processing method in the asynchronous mobile communication system according to claim 1 , wherein the call processing method comprises: The fourth step includes
A 20th step of extracting encrypted information from the radio resource allocation basic information and storing the encrypted information in the asynchronous terminal;
A 21st step of transmitting an encryption completion message to the asynchronous wireless network ;
3. The call processing method in the asynchronous mobile communication system according to claim 2 , wherein the call processing method is configured as follows. The fifth step includes
After receiving the encryption completion message, the 22nd step of transmitting the radio resource basic information for setting the radio resource to the asynchronous mobile communication terminal;
A 23rd step of storing the radio resource basic information in the asynchronous terminal;
A 24th step of setting the radio resource using the stored radio resource information;
A 25th step of transmitting a radio resource setting completion message to the asynchronous radio network ;
4. The call processing method in the asynchronous mobile communication system according to claim 3 , wherein the call processing method comprises: The sixth step includes
After receiving the radio resource setting completion message, a 26th step of transmitting service configuration information to the asynchronous terminal;
A 27th step in which the service configuration information is stored in the asynchronous terminal;
A 28th step of transmitting a service connection completion message to the asynchronous wireless network after completing the service configuration ;
5. The call processing method in an asynchronous mobile communication system according to claim 4 , comprising: The seventh step includes
After receiving the service connection completion message, the radio resource setting completion message is transmitted to the synchronous core network, and if a call waiting message is transmitted from the synchronous core network to the asynchronous wireless network, the call waiting message is transmitted to the asynchronous core network. 6. The call processing method in the asynchronous mobile communication system according to claim 5 , comprising 29th step of transmitting to the terminal. It consists of an asynchronous terminal with a call processing unit (CC) and a radio resource control unit (RRC), and a source asynchronous radio network with a radio resource control unit, and a synchronous core network and at least one target asynchronous radio In a handoff processing method in an asynchronous mobile communication system linked with a network,
A first step of determining what to handoff; and
A second step of selecting the target asynchronous radio network to be handed off;
A third step in response to the handoff request to provide handoff related information to complete handoff preparation;
A fourth step of completing a handoff by setting up a connection between the asynchronous terminal and the target asynchronous wireless network;
A fifth step of releasing the connection between the asynchronous terminal and the source asynchronous wireless network ;
Consists of
The first step includes
Utilizing radio link measurement related information received from the source asynchronous radio network, the sixth step of measuring the capability of the radio link at the asynchronous terminal ,
A seventh step of transmitting a radio link measurement report message to the source asynchronous radio network ;
Using the radio measurement report message, an eighth step of determining whether or not handoff is possible in the source asynchronous radio network ;
Consists of
The second step includes
If it is determined to be handoff, a ninth step of transmitting a handoff request message to the synchronous core network ; and
By analyzing the handoff request message in the synchronous core network, and a tenth step of grasping the information on the target asynchronous radio network,
Consists of
The third step includes
An eleventh step of transmitting a handoff request message from the synchronous core network to the target asynchronous wireless network ;
By using the handoff request message, the twelfth step of storing and analyzing said target asynchronous radio the source asynchronous radio network by network the asynchronous terminal related information,
A handoff request confirmation message is transmitted from the target asynchronous wireless network to the synchronous core network, a handoff command message is transmitted from the synchronous core network to the source asynchronous wireless network, and a physical channel is transmitted from the source asynchronous wireless network to the asynchronous terminal. (physical channel) 13th step of transmitting the reconstructed RRC message ;
A 14th step of transmitting a message reporting that the asynchronous terminal is ready for handoff from the asynchronous terminal to the source asynchronous wireless network; and
A fifteenth step of transmitting a handoff start message from the source asynchronous radio network to the synchronous core network ;
A handoff processing method in an asynchronous mobile communication system, comprising: 8. The handoff processing method in the asynchronous mobile communication system according to claim 7 , wherein the physical channel reconfiguration RRC message further includes information on a target asynchronous radio network. The fourth step includes
A 16th step of performing a radio link setting and synchronization operation between the asynchronous terminal and the target asynchronous wireless network;
A seventeenth step of setting layer 3 signaling and a dedicated control channel (DCCH) between the asynchronous terminal and the asynchronous wireless network ;
8. The handoff processing method in the asynchronous mobile communication system according to claim 7 , wherein the handoff processing method is configured as follows. The fifth step includes
An 18th step of transmitting a handoff completion message from the target asynchronous radio network to the synchronous core network after receiving a message that the handoff is completed from the terminal;
A 19th step of transmitting a release command message for releasing wired resources and wireless resources of the source asynchronous wireless network from the synchronous core network to the source asynchronous wireless network;
A twentieth step of transmitting a message reporting that the radio resource is to be released from the source asynchronous radio network to the asynchronous terminal;
After releasing the radio dedicated resource at the asynchronous terminal, a 21st step of transmitting a radio resource release completion message from the asynchronous terminal to the source asynchronous radio network;
After receiving the RRC connection release message from the source asynchronous radio network, the 22nd step of releasing the layer 3 signaling and radio shared resources in the asynchronous terminal,
A 23rd step of transmitting an RRC connection release completion message from the asynchronous terminal to the source asynchronous wireless network;
A 24th step of transmitting a release completion message that the connection release is completed between the asynchronous terminal and the source asynchronous wireless network from the source asynchronous wireless network to the synchronous core network ;
10. The handoff processing method in the asynchronous mobile communication system according to claim 9 , comprising: In a handoff processing method in an asynchronous mobile communication system comprising an asynchronous terminal, a source asynchronous wireless network, and interlocking with a synchronous core network and at least one target synchronous wireless network,
A first step of determining what to handoff; and
A second step of selecting the target synchronous radio network to be handed off;
A third step in response to the handoff request to provide handoff related information to complete handoff preparation;
A fourth step of completing a handoff by setting up a connection between the asynchronous terminal and the target synchronous wireless network;
A fifth step of releasing the connection between the asynchronous terminal and the source asynchronous wireless network ;
Consists of
The first step includes
Utilizing radio link measurement related information received from the source asynchronous radio network, the sixth step of measuring the capability of the radio link at the asynchronous terminal ,
A seventh step of transmitting a radio link measurement report message to the source asynchronous radio network ;
Using the radio measurement report message, an eighth step of determining whether or not handoff is possible in the source asynchronous radio network ;
Consists of
The second step includes
If it is determined to be handoff, a ninth step of transmitting a handoff request message to the synchronous core network ; and
By analyzing the handoff request message in the synchronous core network, and a tenth step of grasping the information for the target synchronous radio network,
Consists of
The third step includes
An eleventh step of transmitting a handoff request message from the synchronous core network to the target synchronous wireless network ;
A twelfth step of analyzing and storing the source asynchronous radio network and the asynchronous terminal related information in the target synchronous radio network using the handoff request message ;
A thirteenth step of allocating resources to the asynchronous terminal and connecting to the asynchronous terminal in the target synchronous wireless network ;
A fourteenth step of transmitting a null forward traffic channel frame from the target synchronous radio network to the asynchronous terminal ;
A handoff request confirmation message is transmitted from the target synchronous radio network to the synchronous core network, a handoff command message is transmitted from the synchronous core network to the source asynchronous radio network, and the system is transferred from the source asynchronous radio network to the asynchronous terminal. A 15th step of transmitting an intersystem handover request RRC message ; and
A sixteenth step of transmitting a message reporting that the asynchronous terminal is ready for handoff from the asynchronous terminal to the source asynchronous wireless network; and
A seventeenth step of transmitting a handoff start message from the source asynchronous radio network to the synchronous core network ;
A handoff processing method in an asynchronous mobile communication system, comprising: 12. The handoff processing method in the asynchronous mobile communication system according to claim 11 , wherein the inter-system handover RRC message further includes information on a target synchronous radio network. The fourth step includes
An eighteenth step of transmitting a reverse traffic channel frame and a traffic channel preamble from the asynchronous terminal to the target synchronous wireless network;
A 19th step of performing a radio link setting and synchronization operation between the asynchronous terminal and the target synchronous radio network ;
12. The handoff processing method in the asynchronous mobile communication system according to claim 11 , wherein the handoff processing method is configured as follows. The fifth step includes
After receiving a message that the handoff is completed from the terminal, a 20th step of transmitting a handoff completion message from the target synchronous radio network to the synchronous core network;
A 21st step of transmitting a release command message for releasing wired resources and wireless resources of the source asynchronous wireless network from the synchronous core network to the source asynchronous wireless network;
Transmitting a message reporting that the radio resource should be released from the source asynchronous radio network to the asynchronous terminal;
After releasing the radio dedicated resource at the asynchronous terminal, a 23rd step of transmitting a radio resource release completion message from the asynchronous terminal to the source asynchronous radio network;
After receiving the RRC connection release message from the source asynchronous radio network, the 24th step of releasing the layer 3 signaling and radio shared resources in the asynchronous terminal,
A 25th step of transmitting an RRC connection release completion message from the asynchronous terminal to the source asynchronous wireless network;
A 26th step of transmitting a release completion message that the connection release is completed between the asynchronous terminal and the source asynchronous wireless network from the source asynchronous wireless network to the synchronous core network ;
14. The handoff processing method in the asynchronous mobile communication system according to claim 13 , comprising: In a handoff processing method in a synchronous mobile communication system comprising a synchronous terminal, a source synchronous wireless network, and interlocking with a synchronous core network and at least one target asynchronous wireless network,
A first step of determining what to handoff; and
A second step of selecting the target asynchronous radio network to be handed off;
A third step in response to the handoff request to provide handoff related information to complete handoff preparation;
A fourth step of completing a handoff by setting up a connection between the synchronous terminal and the target asynchronous wireless network;
A fifth step of releasing the connection between the synchronous terminal and the source synchronous wireless network ;
Consists of
The first step includes
A sixth step of transmitting a message requesting a peripheral radio link measurement from the source synchronous radio network to the synchronous terminal ;
Using the peripheral radio link measurement related information received from the source synchronous radio network, the seventh step of measuring the capability of the peripheral radio link at the synchronous terminal ,
An eighth step of transmitting a peripheral radio link measurement report message to the source synchronous radio network ;
Ninth step of determining whether or not handoff is possible in the source synchronous radio network using the peripheral radio measurement report message ;
Consists of
The second step includes
If it is determined to be handoff, a tenth step of transmitting a handoff request message to the synchronous core network ; and
An eleventh step of grasping information for the target asynchronous wireless network by analyzing the handoff request message in the synchronous core network ;
Consists of
The third step includes
A twelfth step of transmitting a handoff request message from the synchronous core network to the target asynchronous wireless network ;
By using the handoff request message, the thirteenth step of storing and analyzing the said source synchronous radio network at the target asynchronous radio network and the synchronous mobile station-related information,
A handoff request confirmation message is transmitted from the target asynchronous radio network to the synchronous core network, a handoff command message is transmitted from the synchronous core network to the source synchronous radio network, and extended from the source synchronous radio network to the synchronous terminal 14th step of transmitting a handoff instruction message (extended handoff direction message) and a general handoff direction message (general handoff direction message) ;
A fifteenth step of transmitting a message reporting that the asynchronous terminal is ready for handoff from the synchronous terminal to the source synchronous wireless network ;
A sixteenth step of transmitting a handoff start message from the source synchronous radio network to the synchronous core network ;
A handoff processing method in a synchronous mobile communication system, comprising: The fourth step includes
Performing a radio link setting and synchronization operation between the synchronous terminal and the target asynchronous radio network;
An 18th step of setting up layer 3 signaling and dedicated control channel (DCCH) between the synchronous terminal and the target asynchronous radio network ;
16. The handoff processing method in the synchronous mobile communication system according to claim 15 , comprising: The fifth step includes
A 19th step of transmitting a handoff completion message from the target asynchronous radio network to the synchronous core network after receiving a message that the handoff is completed from the terminal;
A 20th step of transmitting a release command message for releasing wired resources and wireless resources of the source synchronous wireless network from the synchronous core network to the source synchronous wireless network;
A 21st step of releasing all resources and signaling between the synchronous terminal and the source synchronous radio network;
A 22nd step of transmitting from the source synchronous radio network to the synchronous core network a release completion message indicating that the connection release has been completed between the synchronous terminal and the source synchronous radio network ;
17. The handoff processing method in the synchronous mobile communication system according to claim 16 , characterized by comprising: In a handoff processing method in an asynchronous mobile communication system comprising an asynchronous terminal, a source asynchronous wireless network, and interlocking with a synchronous core network and at least one target analog wireless network,
A first step of determining what to handoff; and
A second step of selecting the target analog radio network to be handed off;
A third step in response to the handoff request to provide handoff related information to complete handoff preparation;
A fourth step of completing a handoff by setting up a connection between the asynchronous terminal and the target analog wireless network;
A fifth step of releasing the connection between the asynchronous terminal and the source asynchronous wireless network ;
Consists of
The first step includes
Utilizing radio link measurement related information received from the source asynchronous radio network, the sixth step of measuring the capability of the radio link at the asynchronous terminal ,
A seventh step of transmitting a radio link measurement report message to the source asynchronous radio network ;
Using the radio measurement report message, an eighth step of determining whether or not handoff is possible in the source asynchronous radio network ;
Consists of
The second step includes
If it is determined to be handoff, a ninth step of transmitting a handoff request message to the synchronous core network ; and
A tenth step of ascertaining information for the target analog radio network by analyzing the handoff request message in the synchronous core network ;
Consists of
The third step includes
An eleventh step of transmitting a handoff request message from the synchronous core network to the target analog radio network ;
By using the handoff request message, the twelfth step of storing and analyzing said target analog radio the source asynchronous radio network by network and the asynchronous mobile station-related information,
If there are resources allocated to the asynchronous mobile station to the target analog radio network, the target analog transmit a handoff request acknowledgment message from the radio network to the synchronous core network, the handoff command message to the source asynchronous radio network from the synchronous core network 13th step of transmitting ,
A 14th step of transmitting an intersystem handoff command RRC message from the source asynchronous radio network to the asynchronous terminal ; and
A fifteenth step of transmitting a message reporting that the asynchronous terminal is ready for handoff from the asynchronous terminal to the source asynchronous wireless network ;
A sixteenth step of transmitting a handoff start message from the source asynchronous radio network to the synchronous core network ;
A handoff processing method in an asynchronous mobile communication system, comprising: 19. The handoff processing method in the asynchronous mobile communication system according to claim 18 , wherein the inter-system handoff RRC message further includes information on a target analog radio network. The fourth step includes
The asynchronous mobile station and radio link set between the target analog radio network, the vocoder to claim 18, initialization and characterized in that performing the 17 steps by Li Cheng task of exchanging signaling of (vocoder) A handoff processing method in the described asynchronous mobile communication system. The fifth step includes
An eighteenth step of transmitting a handoff completion message from the target analog radio network to the synchronous core network;
A 19th step of transmitting a release command message for releasing wired resources and wireless resources of the source asynchronous wireless network from the synchronous core network to the source asynchronous wireless network;
Transmitting a message reporting that the radio resource should be released from the source asynchronous radio network to the asynchronous terminal; and
After releasing the radio dedicated resource at the asynchronous terminal, a 21st step of transmitting a radio resource release completion message from the asynchronous terminal to the source asynchronous radio network;
After receiving the RRC connection release message from the source asynchronous radio network, the 22nd step of releasing the layer 3 signaling and the radio shared resource in the asynchronous terminal;
A 23rd step of transmitting an RRC connection release completion message from the asynchronous terminal to the source asynchronous wireless network;
A 24th step of transmitting a release completion message that the connection release is completed between the asynchronous terminal and the source asynchronous wireless network from the source asynchronous wireless network to the synchronous core network ;
21. The handoff processing method in the asynchronous mobile communication system according to claim 20 , wherein the handoff processing method is configured as follows.

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